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Additionally the strength of the concrete was improved due to the partial replacement of RHA3 material in comparison with normal coarse rice husk ash RHA0. On the other hand the influence of OPC and RHA materials on the concrete permeability was affected by the grinding time and age (, curing time). The permeability coefficient decreased ...

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(PDF) Ultrafine grinding of sugar cane bagasse ash for ...

From a low pozzolanic Highperformance concrete activity of less than 50% of the asreceived ash, values above could be reached after prolonged grinding times. Electric power requirements to reach the minimum pozzolanic activity were estimated to be in the order of 42 kWh/t in an industrial ball mill.

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